EP2559875B1 - Apparatus for purifying exhaust gas - Google Patents

Apparatus for purifying exhaust gas Download PDF

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Publication number
EP2559875B1
EP2559875B1 EP10849866.8A EP10849866A EP2559875B1 EP 2559875 B1 EP2559875 B1 EP 2559875B1 EP 10849866 A EP10849866 A EP 10849866A EP 2559875 B1 EP2559875 B1 EP 2559875B1
Authority
EP
European Patent Office
Prior art keywords
housing
casing
exhaust gas
width direction
vehicle width
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP10849866.8A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2559875A4 (en
EP2559875A1 (en
Inventor
Takashi Fukuda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
UD Trucks Corp
Original Assignee
UD Trucks Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by UD Trucks Corp filed Critical UD Trucks Corp
Publication of EP2559875A1 publication Critical patent/EP2559875A1/en
Publication of EP2559875A4 publication Critical patent/EP2559875A4/en
Application granted granted Critical
Publication of EP2559875B1 publication Critical patent/EP2559875B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/02—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate silencers in series
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/011—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more purifying devices arranged in parallel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/033—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices
    • F01N3/035—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors, e.g. catalysed diesel particulate filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/2066—Selective catalytic reduction [SCR]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1838—Construction facilitating manufacture, assembly, or disassembly characterised by the type of connection between parts of exhaust or silencing apparatus, e.g. between housing and tubes, between tubes and baffles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1838—Construction facilitating manufacture, assembly, or disassembly characterised by the type of connection between parts of exhaust or silencing apparatus, e.g. between housing and tubes, between tubes and baffles
    • F01N13/1844—Mechanical joints
    • F01N13/1855—Mechanical joints the connection being realised by using bolts, screws, rivets or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2250/00—Combinations of different methods of purification
    • F01N2250/02—Combinations of different methods of purification filtering and catalytic conversion
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the present invention relates to an exhaust gas purifying apparatus for purifying PM (Particulate Matter) and NOx (nitrogen oxide) in an exhaust gas.
  • Japanese Laid-Open Patent Publication No. 2009-108685 WO 2009/054132 A1 discloses an exhaust emission control device wherein a particulate filter and a selective reduction catalyst arranged downstream of said particulate filter and capable of selectively reacting NOx with ammonia even in the presence of oxygen are housed in casings, respectively, and arranged side by side such that entry ends of the particulate filter and the selective reduction catalyst are oriented to one and the same direction.
  • NO 2 nitrogen dioxide
  • an exhaust gas temperature continues to remain lower than a recycling temperature, then incomplete DPF recycling may occur, resulting in clogging thereof.
  • the prior art has been devised to allow only the casing that houses the DOC converter and the DPF to be easily detached from a vehicle body, leaving the casing that houses the SCR converter on the vehicle body.
  • the casing that houses the DOC converter and the DPF can be removed from the vehicle body, the casing still has to be disassembled to take the DPF out, so that man-hour (amount of work) is large.
  • the casing that houses the DOC converter and the DPF is large and heavy, so that the work itself to detach the casing from the vehicle body has been painstaking.
  • the present invention has been made in view of the problem with the prior art, and it is an object of the invention to provide an exhaust gas purifying apparatus that permits a DPF to be easily removable.
  • an exhaust gas purifying apparatus has, on the outer side of a frame that extends in a longitudinal direction of a vehicle body, a cylindrical first housing that houses a DOC converter and a DPF in this order in an exhaust gas flow direction, and a cylindrical second housing that houses an SCR converter which selectively reduces and purifies a nitrogen oxide in an exhaust gas by using ammonia, the two housings being disposed in parallel such that an exhaust upstream end of each thereof is positioned on the outer side in a vehicle width direction, in which an exhaust stream outlet port of the first housing and an exhaust stream inlet port of the second housing are communicatively connected through a communication pipe.
  • the first housing is configured to be dividable into two parts, that is, a first casing that houses the DOC converter and a second casing that detachably houses the DPF.
  • the first casing and the second casing are separably fastened through a plurality of first fastening members that are accessible from the outer side in the vehicle width direction, and the an exhaust stream inlet port in the first housing is formed by being bent inwards in the vehicle width direction and is detachably fastened, through a second fastening member accessible from the outer side in the vehicle width direction, to an exhaust pipe having a distal end thereof opened toward the outer side in the vehicle width direction.
  • the second casing, which constitutes the first housing, and the second housing are fixed to an outer surface of the frame through a bracket.
  • the DPF is removed from the exhaust gas purifying apparatus according to the following steps.
  • the first fastening members which fasten the first casing and the second casing in the first housing are removed, and the second fastening member which fastens the exhaust stream inlet port in the first housing to the exhaust pipe is removed. This work is not very difficult, because the first fastening members and the second fastening member can be reached from the outer side in the vehicle width direction.
  • pulling the first casing toward the outer side in the vehicle width direction allows the first casing to be removed while leaving the second casing in the first housing and the second housing still mounted on the vehicle body.
  • the exhaust gas purifying apparatus can be reassembled by reversing the procedure for removing the DPF.
  • FIG. 1 illustrates an example of an exhaust gas purifying apparatus.
  • a substantially cylindrical first housing 40 which houses a DOC converter 20 and a DPF 30, and a second housing 70, which houses an SCR converter 50 and an oxidation catalyst converter 60, are installed closely to each other side by side through brackets (not shown) such that the exhaust upstream ends thereof are directed to the outer side in the vehicle width direction.
  • the DOC converter 20 disposed on the exhaust upstream side oxidizes a part of NO (nitrogen monoxide) in an exhaust gas, into NO 2 , while the DPF 30 disposed at an exhaust downstream side collects PM in the exhaust gas and performs recycling by using NO 2 , thereby permitting continuous purification of PM.
  • the SCR converter 50 disposed on the exhaust upstream side uses ammonia generated from a urea aqueous solution serving as a reducing agent precursor to selectively reduce and purify NOx in the exhaust gas, while the oxidation catalyst converter 60 disposed at the exhaust downstream side oxidizes the ammonia that has passed through the SCR converter 50, thereby purifying NOx while restraining the release of the ammonia.
  • the first housing 40 has an exhaust stream inlet port 42, which bends inward in the vehicle width direction from a side surface at an exhaust upstream end, and an exhaust stream outlet port (not shown) formed in a side surface at an exhaust downstream end.
  • the second housing 70 has an exhaust stream inlet port 72 formed in a side surface at the exhaust upstream end and an exhaust stream outlet port (not shown), which bends outward in the vehicle width direction from a side surface at the exhaust downstream end.
  • the exhaust stream outlet port of the first housing 40 is communicatively connected to the exhaust stream inlet port 72 of the second housing 70 through a communication pipe 80, which has a linear portion extending substantially parallel to the axis of the first housing 40.
  • a flange 46 is formed at the end of an opening of the exhaust stream inlet port 42 of the first housing 40.
  • the flange 46 is shaped substantially like a rectangle with rounded corners and which has bolt insertion holes 44 at its four corners for bolts which are examples of the second fastening member.
  • the flange 46 is fastened to the exhaust pipe of a diesel engine so as to be removable.
  • the flange 46 is not limited to the substantially rectangular shape with rounded corners but includes, for example, an annular shape.
  • an injection nozzle (not shown) for supplying and injecting the urea aqueous solution substantially along the axis of the linear portion of the communication pipe 80 is attached.
  • This arrangement leads the urea aqueous solution, which has been supplied by being injected through the injection nozzle, to pass through the linear portion of the communication pipe 80 into the second housing 70, thus making it possible to earn the time for the hydrolysis of the urea aqueous solution and for dispersing and mixing the urea aqueous solution in the exhaust gas and to accelerate the homogenization of the concentration of the ammonia supplied to the SCR converter 50.
  • the first housing 40 is configured to be dividable into two parts, that is, a first casing 90 for housing the DOC converter 20 and a second casing 100 for detachably housing the DPF 30 which is a cartridge type.
  • a flange 92 and a flange 102 which extend toward the outer sides of the radiuses of the openings are formed, respectively.
  • a flange 32 held between the flange 92 of the first casing 90 and the flange 102 of the second casing 100 is formed.
  • the flanges 92 and 32 of the first casing 90 and the DPF 30 are provided with a plurality of insertion holes 94 and 34 into which the shafts of bolts 110 which are examples of the first fastening member are inserted to detachably fasten the flanges to the second casing 100.
  • the flange 102 of the second casing 100 has a plurality of female screws 104 into which bolts 110, which have been inserted in the insertion holes 94 and 34 of the first casing 90 and the DPF 30, respectively, are screwed.
  • a gasket 120 for securing air-tightness is interposed between the flange 92 of the first casing 90 and the flange 32 of the DPF 30 and between the flange 32 of the DPF 30 and the flange 102 of the second casing 100.
  • At least one (two in the present embodiment) positioned at a vertically upper point when mounted on a vehicle may be replaced by a bolt 106, which is to be welded to the flange 102.
  • the bolt 106 may be inserted into the insertion holes 34 and 94 of the DPF 30 and the first casing 90, respectively, for temporary fastening, thereby permitting easy installation of the DPF 30 and the first casing 90.
  • nuts 130 which are examples of the first fastening members, may be screwed onto the distal ends of the bolts 106.
  • the bolts 106 are capable of retaining the first casing 90 from falling off when the bolts 1 10 are removed. Instead of welding the bolts 106, stud bolts may be screwed (buried) in the female screws 104.
  • an insertion hole 36 into which a fixing bolt (a third fastening member) is inserted may be formed in the flange 32 of the DPF 30 and a female screw 108, in which a fixing bolt is screwed, may be formed in the flange 102 of the second casing 100.
  • the DPF 30 may be detachably fastened to the second casing 100 through a fixing bolt that can be accessed from the outer side in the vehicle width direction.
  • the apparatus for purifying exhaust gas which includes the first housing 40 and the second housing 70, is installed to the outer surface of the frame 10 by the installation structure illustrated in FIG. 3 . More specifically, a first bracket 150 and a second bracket 160 are detachably fastened to the outer surface of the frame 10, being positioned away from each other in the longitudinal direction of the vehicle body, through bolts 140 which are examples of the fastening members.
  • the first bracket 150 has a first member 154 with a pair of arms 152 formed integrally therewith, which are positioned apart from each other by a predetermined interval in the longitudinal direction of the vehicle body and which extend to the outer side in the vehicle width direction, and second members 156, which are detachably connected to the arms 152 of the first member 154 through bolts 170 and nuts 172 which are examples of the fastening members and which extend to the outer side in the vehicle width direction.
  • the first member 154 is detachably fastened to the outer surface of the frame 10 through the bolts 140.
  • the second bracket 160 has a substantially L-shaped first member 164, which has an arm 162 extending to the outer side in the vehicle width direction, and a second member 166 for fixing a portion of the L-shaped first member 164, which extends in the vertical direction of the vehicle body, to the frame 10.
  • the second casing 100 constituting the first housing 40 has fixing portions 190.
  • the fixing portions 190 detachably fasten the second casing 100 to the second members 156 of the first bracket 150 through nuts 180 which are examples of the fastening members.
  • the fixing portions 190 have upper surfaces, which are shaped to match the bottom surfaces of the second members 156, stud bolts 192 being buried therein.
  • the number of the stud bolts 192 may be appropriately determined, considering, for example, the weight of the apparatus for purifying exhaust gas that includes the first housing 40 and the second housing 70.
  • the second housing 70 has a fixing portion 210.
  • the fixing portion 210 fixes the second housing 70 to the arm 162 of the first member 164 of the second bracket 160 via bolts 200 and nuts 202 which are examples of the fastening members.
  • the fixing portion 210 has an upper surface that is shaped to match the shape of the bottom surface of the distal end of the arm 162, and insertion holes 212, in which bolts 200 are inserted, are provided therein.
  • the flange 46 formed at the distal end of an exhaust stream inlet port 42 of the first housing 40 is detachably fastened to a flange 242 formed at the distal end of an exhaust pipe 240, which opens to the outer side in the vehicle width direction, through bolts 230 and nuts 232 which are examples of the second fastening members, with a gasket 220 for securing airtightness being interposed therebetween.
  • the heads of the bolts 230 are positioned on the outer side in the vehicle width direction.
  • a tail pipe 250 the distal end of which opens in a rearward direction of the vehicle body, is connected to the distal end of the exhaust stream outlet port of the second housing 70.
  • the second casing 100 of the first housing 40 may be provided with a supporting portion 260, which supports the middle of the exhaust pipe 240, and the proximal end of the tail pipe 250 may be provided with a connecting portion 270 connected with the second bracket 160 so as to enhance the supporting strength of the exhaust pipe 240 and the tail pipe 250 on the vehicle body.
  • the first housing 40 and the exhaust pipe 240, and the second bracket 160 and the tail pipe 250 are detachably fastened through bolts 280 and nuts 282 which are examples of the fastening members.
  • the urea aqueous solution injected through the injection nozzle at a flow rate based on an engine operation state is hydrolyzed by using exhaust heat and the water vapor in the exhaust gas, to be converted into ammonia, which functions as a reducing agent.
  • the ammonia reacts in selective reduction with NOx of the exhaust gas in the SCR converter 50 so as to be purified into H 2 O (water) and N 2 (nitrogen gas), which are harmless ingredients.
  • the ammonia that has passed through the SCR converter 50 is oxidized by the oxidation catalyst converter 60 disposed at the exhaust downstream side, thus making it possible to restrain the ammonia from being directly released into the atmosphere.
  • the bolts 230 and the nuts 232 which connect the exhaust stream inlet port 42 of the first housing 40 to the exhaust pipe 240, are removed and the bolts 110 and the nuts 130, which fasten the first casing 90 to the second casing 100 in the first housing 40 are removed.
  • This work is not very difficult, because the heads of the bolts 110 and the nuts 130 can be reached from the outer side in the vehicle width direction. Then, pulling the first casing 90 of the first housing 40 towards the outer side in the vehicle width direction allows the first casing 90 to be removed while leaving the second casing 100 of the first housing 40 and the second housing 70 still mounted on the vehicle body.
  • the apparatus for purifying exhaust gas including the first housing 40, the second housing 70, and the tail pipe 250 can be easily removed from the vehicle body by releasing the apparatus from the first bracket 150 and the second bracket 160 and also releasing the exhaust pipe 240.
  • the first bracket 150 and the second bracket 160 do not have to be structured as described above, as long as they allow the second casing 100 constituting the first housing 40 and the second housing 70 to be installed to the frame 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Processes For Solid Components From Exhaust (AREA)
EP10849866.8A 2010-04-15 2010-11-30 Apparatus for purifying exhaust gas Active EP2559875B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2010094017A JP5279753B2 (ja) 2010-04-15 2010-04-15 排気浄化装置
PCT/JP2010/071383 WO2011129030A1 (ja) 2010-04-15 2010-11-30 排気浄化装置

Publications (3)

Publication Number Publication Date
EP2559875A1 EP2559875A1 (en) 2013-02-20
EP2559875A4 EP2559875A4 (en) 2014-07-02
EP2559875B1 true EP2559875B1 (en) 2016-03-16

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP10849866.8A Active EP2559875B1 (en) 2010-04-15 2010-11-30 Apparatus for purifying exhaust gas

Country Status (5)

Country Link
US (1) US8715578B2 (zh)
EP (1) EP2559875B1 (zh)
JP (1) JP5279753B2 (zh)
CN (1) CN102959194B (zh)
WO (1) WO2011129030A1 (zh)

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US9057316B2 (en) 2012-12-03 2015-06-16 Tenneco Automotive Operating Company Inc. Exhaust component mounting structure
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JP5956373B2 (ja) 2013-03-28 2016-07-27 ヤンマー株式会社 作業車両のエンジン装置
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WO2016109323A1 (en) 2014-12-31 2016-07-07 Cummins Emission Solutions, Inc. Close coupled single module aftertreatment system
GB2587723B8 (en) 2014-12-31 2021-08-25 Cummins Emission Solutions Inc Single module integrated aftertreatment module
CN107109993B (zh) * 2014-12-31 2019-08-20 康明斯排放处理公司 紧凑的侧式出入口排气后处理系统
WO2016002973A1 (ja) 2015-08-21 2016-01-07 株式会社小松製作所 油圧ショベル
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JP6216413B2 (ja) * 2016-06-16 2017-10-18 ヤンマー株式会社 トラクタ
JP6764716B2 (ja) * 2016-07-14 2020-10-07 日野自動車株式会社 排気浄化装置
EP4285007A1 (en) * 2021-02-01 2023-12-06 Dinex A/S Compact exhaust gas treatment system with serviceable filter
CN112879141B (zh) * 2021-02-26 2021-12-17 徐州徐工矿业机械有限公司 一种降低非道路移动机械大功率发动机烟度的后处理装置

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CN101070767A (zh) * 2007-03-20 2007-11-14 张德明 机动车尾气再循环旁通冷却装置
JP4928388B2 (ja) * 2007-08-31 2012-05-09 日野自動車株式会社 排気浄化装置
JP4286887B2 (ja) * 2007-09-28 2009-07-01 日産ディーゼル工業株式会社 排気浄化装置
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JP5274234B2 (ja) * 2008-12-24 2013-08-28 Ｕｄトラックス株式会社 ディーゼルエンジンの排気浄化装置

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JP5279753B2 (ja) 2013-09-04
EP2559875A4 (en) 2014-07-02
JP2011226298A (ja) 2011-11-10
EP2559875A1 (en) 2013-02-20
CN102959194B (zh) 2015-09-30
US20130039817A1 (en) 2013-02-14
WO2011129030A1 (ja) 2011-10-20
US8715578B2 (en) 2014-05-06
CN102959194A (zh) 2013-03-06

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